25256231 has 32 divisors (see below), whose sum is σ = 35417088. Its totient is φ = 17360640.

The previous prime is 25256207. The next prime is 25256243. The reversal of 25256231 is 13265252.

It is not a de Polignac number, because 25256231 - 2⁶ = 25256167 is a prime.

It is a super-2 number, since 2×25256231² = 1275754408650722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25256231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25256201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22475 + ... + 23571.

It is an arithmetic number, because the mean of its divisors is an integer number (1106784).

Almost surely, 2^25256231 is an apocalyptic number.

25256231 is a deficient number, since it is larger than the sum of its proper divisors (10160857).

25256231 is a wasteful number, since it uses less digits than its factorization.

25256231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1151.

The product of its digits is 3600, while the sum is 26.

The square root of 25256231 is about 5025.5577799882. The cubic root of 25256231 is about 293.3973455628.

The spelling of 25256231 in words is "twenty-five million, two hundred fifty-six thousand, two hundred thirty-one".